CVE-2026-42314 pyLoad: Path Traversal via Package Folder Name

Medium 6.5 Published 11 May 2026 Updated 11 May 2026

Attackers can exploit insufficient sanitization of package folder names in pyLoad to perform path traversal, potentially reading or modifying arbitrary files.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-42314?

CVE-2026-42314 is a medium-severity path traversal vulnerability in pyload, published on 11 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, package folder names are sanitized using insufficient string replacement. The pattern ....// becomes .._ after replacement (partial removal), leaving .. which can be exploited when the path is later resolved by the OS. This vulnerability is fixed in 0.5.0b3.dev100.

Weakness: CWE-22

Which versions are affected by CVE-2026-42314?

3 open source packages ship an affected version, including pyload-ng. It affects 1 product.

Package	Affected	Fixed in
`pyload-ng` PyPI	All versions	`0.5.0b3.dev100`
`pyload-ng` PyPI	All versions	`0.5.0b3.dev100`
`pyload-ng` PyPI	All versions	`0.5.0b3.dev100`

Products include Pyload-Ng Project Pyload-Ng.

How do I fix CVE-2026-42314?

Upgrade pyload-ng to 0.5.0b3.dev100 or later.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-42314 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42314 exists.

Sources

Also known as GHSA-97r3-5w84-r4q8, PYSEC-2026-128.